CN113020252A - Rolling production line - Google Patents
Rolling production line Download PDFInfo
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- CN113020252A CN113020252A CN201911248412.6A CN201911248412A CN113020252A CN 113020252 A CN113020252 A CN 113020252A CN 201911248412 A CN201911248412 A CN 201911248412A CN 113020252 A CN113020252 A CN 113020252A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 299
- 238000004519 manufacturing process Methods 0.000 title abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 67
- 230000007246 mechanism Effects 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/12—Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
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Abstract
The invention discloses a rolling production line which comprises five modularized rolling mills sequentially arranged along a rolling direction, wherein each modularized rolling mill comprises a transmission box (45), the transmission box (45) is connected with a first rolling box (46) and a second rolling box (47), the first rolling box (46) comprises a pair of first rollers (461), the second rolling box (47) comprises a pair of second rollers (471), rolling passes formed by the pair of first rollers (461) are oval, rolling passes formed by the pair of second rollers (471) are round, and the first rolling box (46) and the second rolling box (47) are sequentially arranged along the rolling direction. Each modular rolling mill in the rolling production line is independent and can be controlled independently, so that flexible production of the rolling line can be realized, idle running of the rolling mill in idle pass is avoided, production cost is reduced, and production efficiency is improved.
Description
Technical Field
The invention relates to the field of metal bar and wire rolling equipment, in particular to a rolling production line.
Background
The finish rolling area of the existing wire or high rod production line mostly adopts a centralized transmission finish rolling unit, the number of frames of the finish rolling machine is different from 6 to 10, and the finish rolling machine rolls by using different frames according to different specifications of rolled pieces of production specifications.
Taking a typical 10-stand finishing mill group as an example (see fig. 1), the finishing mill group mainly comprises 10 stands of rolling mills, a speed increaser 111, a coupler 112 and a main motor 113. Along the rolling direction a, the 10 rolling mills are respectively the tenth rolling mill 110, the ninth rolling mill 19, the eighth rolling mill 18, the seventh rolling mill 17, the sixth rolling mill 16, the fifth rolling mill 15, the fourth rolling mill 14, the third rolling mill 13, the second rolling mill 12, and the first rolling mill 11 in this order.
The first to tenth rolling mills 11 to 110 correspond to pass numbers respectively such that the first rolling mill 11 corresponds to the first pass K1, the second rolling mill 12 corresponds to the second pass K2, the third rolling mill 13 corresponds to the third pass K3, the fourth rolling mill 14 corresponds to the fourth pass K4, the fifth rolling mill 15 corresponds to the fifth pass K5, the sixth rolling mill 16 corresponds to the sixth pass K6, the seventh rolling mill 17 corresponds to the seventh pass K7, the eighth rolling mill 18 corresponds to the eighth pass K8, the ninth rolling mill 19 corresponds to the ninth pass K9, and the tenth rolling mill 110 corresponds to the tenth pass K10. The main motor 113 drives 10 tandem rolling mills to operate in a centralized transmission mode through the coupling 112 and the speed increaser 111.
Different production specifications use different numbers and positions of rolling mills according to the pass system diagram of the process, as shown in fig. 2.
When the diameter of the blank is
Then, rolling the blank by 10 passes from the first pass K1 to the tenth pass K10;
when the diameter of the blank is
When the blank is rolled for 8 passes from the first pass K1 to the eighth pass K8, the blank is empty from the ninth pass K9 to the tenth pass K10;
when the diameter of the blank is
When the blank is rolled for 6 passes by using the third pass K3-the eighth pass K8, the blank is empty of the first pass K1-the second pass K2 and the ninth pass K9-the tenth pass K10;
when the diameter of the blank is
When the blank is rolled for 4 passes from the fifth pass K5 to the eighth pass K8, the blank is empty of the first pass K1 to the fourth pass K4 and the ninth pass K9 to the tenth pass K10;
when the diameter of the blank is
When the blank is rolled for 2 passes by using a seventh pass K7-an eighth pass K8, the blank is empty of a first pass K1-a sixth pass K6 and a ninth pass K9-a tenth pass K10;
from the above rolling process it can be seen that:
1. when only small-sized rolled pieces are produced
The finishing mill group is full of 10 passes, and other large-sized rolls need to pass through the rolling mills with some passes.
2. The passes (oval-round) of the empty rolling mill occur in pairs, the number of empty rolling mills being an integer multiple of 2.
3. The rolling mill passing through the empty passes is in centralized transmission, and the rolling mill idles together, so that the loss of equipment is increased, the consumption of spare parts of the equipment is increased, and the power consumption is increased.
4. Because of centralized transmission, the mechanical speed ratio between each stand of rolling mill is fixed and not adjustable, so when a roll collar is worn and needs to be replaced at a certain time. If the replaced roll diameter is not consistent with the rest of the passes, the roll rings of the rest of the passes need to be replaced. This increases the amount of stock of the collars and reduces the flexibility of rolling.
Disclosure of Invention
In order to reduce the rolling cost, the invention provides a rolling production line, which comprises a plurality of mutually independent modular rolling mills capable of being controlled independently, so that the flexible production of the rolling line can be realized, the idle running of the rolling mills passing through passes can be avoided, the production cost is reduced, and the production efficiency is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a rolling production line comprises five modular rolling mills which are sequentially arranged along a rolling direction, wherein each modular rolling mill comprises a transmission box, the transmission boxes are connected with a first rolling box and a second rolling box, the first rolling box comprises a pair of first rollers, the second rolling box comprises a pair of second rollers, and the first rolling box and the second rolling box are sequentially arranged along the rolling direction; the five modular rolling mills sequentially arranged along the rolling direction are respectively a first modular rolling mill, a second modular rolling mill, a third modular rolling mill, a fourth modular rolling mill and a fifth modular rolling mill;
a pair of first modular rolling millsThe rolling pass formed by one roller is a first ellipse, and the area of the first ellipse is 168.44mm2、200.38mm2、234.82mm2、331.48mm2、349.85mm2Or 376.28mm2(ii) a The rolling pass formed by the pair of second rollers of the first modular rolling mill is a first circle with the area of 139.66mm2、166.80mm2、193.31mm2、273.77mm2、290.16mm2Or 312.56mm2(ii) a The rolling pass formed by the pair of first rollers of the second modular rolling mill is a second ellipse, and the area of the second ellipse is 109.04mm2、131.69mm2、151.51mm2、176.24mm2、202.36mm2、229.83mm2、260.32mm2、286.84mm2、205.97mm2、228.91mm2、251.81mm2、277.08mm2、301.58mm2、207.55mm2、225.82mm2、242.97mm2、262.97mm2、287.45mm2Or 307.83mm2(ii) a The rolling pass formed by the pair of second rollers of the second modular rolling mill is a second circle with the area of 90.52mm2、110.43mm2、124.50mm2、147.34mm2、170.44mm2、189.28mm2、217.34mm2、237.11mm2、170.91mm2、188.54mm2、208.05mm2、232.19mm2、252.11mm2、172.37mm2、186.52mm2、201.91mm2、218.51mm2、240.16mm2Or 256.06mm2(ii) a The rolling pass formed by the pair of first rollers of the third modular rolling mill is a third ellipse, and the area of the third ellipse is 73.00mm2、87.49mm2、99.11mm2、116.83mm2、135.66mm2、150.08mm2、171.64mm2、185.56mm2、136.05mm2、149.64mm2、164.22mm2、183.89mm2Or 200.34mm2(ii) a The rolling pass formed by the pair of second rollers of the third modular rolling mill is a third circleThe area is 58.77mm2、71.63mm2、82.66mm2、95.51mm2、111.44mm2、125.33mm2、141.73mm2、155.08mm2、112.00mm2、125.14mm2、137.43mm2、152.74mm2Or 165.45mm2(ii) a The rolling pass formed by the pair of first rollers of the fourth modular rolling mill is a fourth ellipse, and the area of the fourth ellipse is 45.64mm2、54.41mm2、63.39mm2、73.61mm2、85.13mm2、96.11mm2、108.67mm2Or 123.13mm2(ii) a The rolling pass formed by the pair of second rollers of the fourth modular rolling mill is a fourth circle, and the area of the fourth circle is 37.20mm2、44.65mm2、52.13mm2、60.36mm2、69.70mm2、79.18mm2、89.28mm2Or 100.78mm2(ii) a The rolling pass formed by the pair of first rolls of the fifth modular rolling mill is a fifth ellipse, and the area of the fifth ellipse is 29.18mm2、34.79mm2、40.60mm2、47.17mm2、54.51mm2、61.43mm2、69.57mm2、77.90mm2、86.68mm2、95.78mm2、105.29mm2、116.26mm2、126.20mm2、136.87mm2、148.83mm2、160.70mm2、173.93mm2、186.42mm2、199.40mm2、213.30mm2、226.97mm2、243.77mm2、258.46mm2、272.87mm2、226.69mm2、307.81mm2、323.95mm2、339.90mm2、359.54mm2Or 377.64mm2(ii) a The rolling pass formed by the pair of second rollers of the fifth modular rolling mill is a fifth circle with the area of 23.76mm2、28.27mm2、33.18mm2、38.48mm2、44.18mm2、50.27mm2、56.75mm2、63.62mm2、70.88mm2、78.54mm2、86.59mm2、95.03mm2、103.87mm2、113.10mm2、122.72mm2、132.73mm2、143.14mm2、153.94mm2、165.13mm2、176.67mm2、188.69mm2、201.04mm2、213.82mm2、226.69mm2、240.25mm2、254.78mm2、268.78mm2、283.54mm2、298.57mm2Or 314.11mm2。
The modular rolling mill further comprises a motor and a gear box, the motor, the gear box and the transmission box are sequentially connected, and the motor can drive the pair of first rollers and the pair of second rollers to roll.
The transmission box comprises a transmission input shaft, a large gear is sleeved outside the transmission input shaft and connected with the pair of first rollers through a first transmission mechanism, and the large gear is connected with the pair of second rollers through a second transmission mechanism.
The first transmission mechanism comprises a first pinion, a first horizontal shaft, a first bevel gear pair, a first inclined main shaft and a first main cylindrical gear pair which are sequentially connected, wherein the first pinion is meshed with the large gear.
A driving gear of the first main cylindrical gear pair is sleeved outside the first inclined main shaft, and a driven gear of the first main cylindrical gear pair is sleeved outside one first roller of the pair of first rollers.
The first transmission mechanism also comprises a first slave cylindrical gear pair and a first inclined auxiliary shaft, a driving gear of the first master cylindrical gear pair is meshed with a driving gear of the first slave cylindrical gear pair, and a driven gear of the first slave cylindrical gear pair is sleeved outside the other first roller of the pair of first rollers.
The first pinion is a helical gear, the first main cylindrical gear pair is a helical gear pair, and the structure of the first transmission mechanism is the same as that of the second transmission mechanism.
The output shaft of the motor is connected with the input shaft of the gear box through a first coupler, the output shaft of the gear box is connected with the transmission input shaft of the transmission box through a second coupler, the rolling production line further comprises a water tank, and the fifth modular rolling mill is located between the fourth modular rolling mill and the water tank.
The gearbox of the third modular rolling mill, the gearbox of the fourth modular rolling mill and the gearbox of the fifth modular rolling mill are all speed change gearboxes.
The speed change gear box is provided with two gears which are a high-speed gear and a low-speed gear respectively.
The invention has the beneficial effects that: the rolling production line comprises a plurality of mutually independent modular rolling mills which can be controlled independently, so that flexible production of the rolling line can be realized, idle running of the rolling mills in idle pass is avoided, production cost is reduced, and production efficiency is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic configuration diagram of a conventional finishing mill group.
Fig. 2 is a schematic view of a rolling process of a conventional finishing mill group.
Fig. 3 is a schematic view of the external configuration of the modular rolling mill according to the present invention.
Fig. 4 is a schematic view of the internal construction of the modular rolling mill according to the present invention.
FIG. 5 is a schematic view of the construction of the rolling line and the rolling process of the present invention.
FIG. 6 is a schematic view of the construction of the change speed gear box of the present invention.
11. A first stand rolling mill; 12. a second stand rolling mill; 13. a third rolling mill; 14. a fourth rolling mill; 15. a fifth rolling mill; 16. a sixth rolling mill; 17. a seventh rolling mill; 18. an eighth rolling mill; 19. a ninth rolling mill; 110. a tenth rolling mill; 111. a speed increaser; 112. a coupling; 113. a main motor;
1. a first modular rolling mill; 2. a second modular rolling mill; 3. a third modular rolling mill; 4. a fourth modular rolling mill; 5. a fifth modular rolling mill; 6. a water tank;
41. a motor; 42. a first coupling; 43. a gear case; 44. a second coupling; 45. a transmission case; 46. a first roll cassette; 47. a second roll cassette;
451. a bull gear; 452. a first pinion gear; 453. a second pinion gear; 454. a first bevel gear pair; 455. a second bevel gear pair; 456. a first main cylindrical gear pair; 457. a second main cylindrical gear pair; 458. a drive input shaft; 459. a first horizontal axis; 4510. a first inclined main shaft; 4511. a first slave cylindrical gear pair; 4512. a first inclined layshaft;
431. a high-speed gear pair; 432. a low speed gear pair; 433. a shift clutch;
461. a first roll;
471. and a second roller.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A modular rolling mill comprises a motor 41, a gear box 43 and a transmission box 45 which are connected in sequence, wherein the transmission box 45 is connected with a first rolling box 46 and a second rolling box 47, the first rolling box 46 comprises a pair of first rollers 461, the second rolling box 47 comprises a pair of second rollers 471, the rolling pass formed by the pair of first rollers 461 is oval, the rolling pass formed by the pair of second rollers 471 is round, the first rolling box 46 and the second rolling box 47 are arranged in sequence along a rolling direction A, and the motor 41 can drive the pair of first rollers 461 and the pair of second rollers 471 to roll metal bars or wires, as shown in figures 3 and 4.
In this embodiment, the transmission box 45 includes a transmission input shaft 458, a large gear 451 is fixedly sleeved outside the transmission input shaft 458, the large gear 451 is connected to a pair of first rollers 461 through a first transmission mechanism, meanwhile, the large gear 451 is connected to a pair of second rollers 471 through a second transmission mechanism, one end of the transmission input shaft 458 is located in the casing of the transmission box 45, the other end of the transmission input shaft 458 is located outside the casing of the transmission box 45, and the first transmission mechanism and the second transmission mechanism are both located in the casing of the transmission box 45. When the transmission input shaft 458 rotates, that is, the transmission input shaft 458 rotates about the axis of the transmission input shaft 458, the pair of first rollers 461 and the pair of second rollers 471 are both capable of rotating and rolling the metal bar or wire. The pair of first rollers 461 and the pair of second rollers 471 correspond to two passes of the rolling process.
In this embodiment, the first transmission mechanism includes a first pinion gear 452, a first horizontal shaft 459, a first bevel gear pair 454, a first tilting main shaft 4510, and a first main cylindrical gear pair 456, which are connected in this order, and the first pinion gear 452 meshes with the large gear 451. A driving gear of the first main cylindrical gear pair 456 is fixedly sleeved outside the first inclined main shaft 4510, and a driven gear of the first main cylindrical gear pair 456 is fixedly sleeved outside one first roller 461 of the pair of first rollers 461.
In this embodiment, the first transmission mechanism further includes a first slave cylindrical gear pair 4511 and a first tilting auxiliary shaft 4512, the driving gear of the first master cylindrical gear pair 456 is engaged with the driving gear of the first slave cylindrical gear pair 4511, and the driven gear of the first slave cylindrical gear pair 4511 is fixedly sleeved outside the other first roller 461 of the pair of first rollers 461.
In this embodiment, the transmission input shaft 458 is in a horizontal state, and the pair of first rollers 461 and the pair of second rollers 471 are in a diagonally crossing state. The large gear 451 is a helical gear, the first small gear 452 is a helical gear, the first bevel gear 454 is a helical gear pair, the first main cylindrical gear 456 is a helical gear pair, and the first slave cylindrical gear 4511 is a helical gear pair.
In the present embodiment, the first transmission mechanism has the same configuration as the second transmission mechanism, and the first transmission mechanism and the second transmission mechanism are symmetrically arranged on both sides of the large gear 451. The second transmission mechanism includes a second pinion 453, a second horizontal shaft, a second bevel gear pair 455, a second tilting spindle, a second main cylindrical gear pair 457, and the like, which are connected in this order, and the second pinion 453 is engaged with the large gear 451. The connection of the second transmission mechanism to the pair of second rollers 471 can be referred to the connection of the first transmission mechanism to the pair of first rollers 461 as shown in fig. 3 and 4. The first and second roll cassettes 46 and 47 extend between them with a fixed mechanical speed ratio.
In the present embodiment, the output shaft of the motor 41 is coaxially connected and fixed to the input shaft of the gear box 43 by the first coupling 42, and the output shaft of the gear box 43 is coaxially connected and fixed to the transmission input shaft 458 of the transmission case 45 by the second coupling 44. In operation, the motor 41 sequentially drives the pair of first rollers 461 of the first roll box 46 and the pair of second rollers 471 of the second roll box 47 through the gear box 43 and the transmission box 45 to perform rolling operation, and the pair of first rollers 461 and the pair of second rollers 471 respectively correspond to two passes of the rolling process.
A rolling line comprising a plurality of modular rolling mills as described above, each of said modular rolling mills being independent of the other, said plurality of modular rolling mills being arranged in succession along a rolling direction a, is described. Because each modular rolling mill is independent, the modular rolling mill corresponding to the empty pass can stop running so as to avoid idling and reduce equipment consumption and power consumption. In addition, which pass of the corresponding collar of the modular rolling mill wears out and needs to be replaced. The damaged parts can be maintained and replaced independently without replacing the whole body. This increases the amount of stock of the collars and reduces the flexibility of rolling.
In each of the modular rolling mills described, the transmission case 45 and the motor 41 remain unchanged, and the speed ratio variation between the modules is achieved only by the speed ratio of the gear case 43. Therefore, the uniformity of important equipment (the motor and the transmission case) can be realized, the equipment is convenient to maintain, and the cost of spare parts is reduced.
In the present embodiment, the rolling line contains five of said modular rolling mills, which are respectively a first modular rolling mill 1, a second modular rolling mill 2, a third modular rolling mill 3, a fourth modular rolling mill 4 and a fifth modular rolling mill 5 in the rolling direction a, as shown in fig. 5.
Each modular rolling mill has two passes, and the rolls of the first modular rolling mill 1 to the fifth modular rolling mill 5 form ten passes, namely K1, K2, K3, K4, K5, K6, K7, K8, K9 and K10. After the roller corresponding to the first pass K1 rolls out a finished product, the rolled piece immediately enters the water tank 6 for water cooling according to the requirements of the water cooling process system to realize the control of the metallographic structure of the rolled piece, thereby obtaining the required mechanical properties.
The pair of first rolls 461 of the first modular rolling mill 1 forms a rolling pass having a first ellipse with an area of 168.44mm2、200.38mm2、234.82mm2、331.48mm2、349.85mm2Or 376.28mm2。
The pair of second rolls 471 of the first modular rolling mill 1 forms a rolling pass as a first circle having an area of 139.66mm2、166.80mm2、193.31mm2、273.77mm2、290.16mm2Or 312.56mm2。
The pair of first rolls 461 of the second modular rolling mill 2 forms a rolling pass having a second ellipse whose area is 109.04mm2、131.69mm2、151.51mm2、176.24mm2、202.36mm2、229.83mm2、260.32mm2、286.84mm2、205.97mm2、228.91mm2、251.81mm2、277.08mm2、301.58mm2、207.55mm2、225.82mm2、242.97mm2、262.97mm2、287.45mm2Or 307.83mm2。
The pair of second rolls 471 of the second modular rolling mill 2 forms a rolling pass as a second circle having an area of 90.52mm2、110.43mm2、124.50mm2、147.34mm2、170.44mm2、189.28mm2、217.34mm2、237.11mm2、170.91mm2、188.54mm2、208.05mm2、232.19mm2、252.11mm2、172.37mm2、186.52mm2、201.91mm2、218.51mm2、240.16mm2Or 256.06mm2。
The pair of first rolls 461 of the third modular rolling mill 3 forms a rolling pass having a third ellipse with an area of 73.00mm2、87.49mm2、99.11mm2、116.83mm2、135.66mm2、150.08mm2、171.64mm2、185.56mm2、136.05mm2、149.64mm2、164.22mm2、183.89mm2Or 200.34mm2；
The pair of second rolls 471 of the third modular rolling mill 3 forms a rolling pass as a third circle having an area of 58.77mm2、71.63mm2、82.66mm2、95.51mm2、111.44mm2、125.33mm2、141.73mm2、155.08mm2、112.00mm2、125.14mm2、137.43mm2、152.74mm2Or 165.45mm2；
The pair of first rolls 461 of the fourth modular rolling mill 4 forms a rolling pass having a fourth ellipse with an area of 45.64mm2、54.41mm2、63.39mm2、73.61mm2、85.13mm2、96.11mm2、108.67mm2Or 123.13mm2；
The pair of second rolls 471 of the fourth modular rolling mill 4 forms a rolling pass as a fourth circle having an area of 37.20mm2、44.65mm2、52.13mm2、60.36mm2、69.70mm2、79.18mm2、89.28mm2Or 100.78mm2；
The pair of first rolls 461 of the fifth modular rolling mill 5 forms a rolling pass having a fifth ellipse with an area of 29.18mm2、34.79mm2、40.60mm2、47.17mm2、54.51mm2、61.43mm2、69.57mm2、77.90mm2、86.68mm2、95.78mm2、105.29mm2、116.26mm2、126.20mm2、136.87mm2、148.83mm2、160.70mm2、173.93mm2、186.42mm2、199.40mm2、213.30mm2、226.97mm2、243.77mm2、258.46mm2、272.87mm2、226.69mm2、307.81mm2、323.95mm2、339.90mm2、359.54mm2Or 377.64mm2；
The pair of second rolls 471 of the fifth modular rolling mill 5 forms a rolling pass as a fifth circle having an area of 23.76mm2、28.27mm2、33.18mm2、38.48mm2、44.18mm2、50.27mm2、56.75mm2、63.62mm2、70.88mm2、78.54mm2、86.59mm2、95.03mm2、103.87mm2、113.10mm2、122.72mm2、132.73mm2、143.14mm2、153.94mm2、165.13mm2、176.67mm2、188.69mm2、201.04mm2、213.82mm2、226.69mm2、240.25mm2、254.78mm2、268.78mm2、283.54mm2、298.57mm2Or 314.11mm2。
When rod and wire materials with different diameters are rolled, the roll rings with different specifications can be replaced on the roll of each modular rolling mill according to the requirements, the rolling pass is the rolling pass formed by the roll rings with different specifications, and the area value is the area of the rolling pass formed by the roll rings with different specifications.
The operation of the rolling line is described below.
Each modular rolling mill is driven by 1 motor 41, and the speed is adjusted according to the requirements of the rolling process. When producing the rod wire rod of different specifications, the empty modularization rolling mill can stop its motor, saves the power consumption. Such as:
production of
Blank empty "first modular mill 1";
production of
Blank passing through the first modular rolling mill 1 and the fourth dieA blocking rolling mill 4 ";
production of
Blanks empty through "first modular mill 1", "third modular mill 3" and "fourth modular mill 4";
production of
Blanks empty through "second modular mill 2", "third modular mill 3" and "fourth modular mill 4";
production of
Blanks empty through "first modular rolling mill 1", "second modular rolling mill 2", "third modular rolling mill 3" and "fourth modular rolling mill 4";
and so on as shown in fig. 5.
Two driving passes of each modular rolling mill are an ellipse-circle minimum unit, the outlet section of each modular rolling mill is a circular section, and the circular section is stably engaged when entering a downstream rolling mill, so that dynamic adjustment of the speed between modules is facilitated.
Because 10 finishing mills are divided into 5 modular rolling mills, when roll collars are worn, only the roll collar of one modular rolling mill needs to be protected, the roll collars of other modules do not need to be replaced, and then the speed ratio matching among the modules can be realized by adjusting the motor rotating speed of the modular rolling mill. This way the flexibility of production is increased. In addition, the rolling line also contains a water tank 6 for water cooling.
Typical product rolling speeds are shown in table 1.
TABLE 1 Rolling speed of rolled piece
In the embodiment, the rolling line comprises five modular rolling mills arranged in sequence along the rolling direction, each modular rolling mill comprises a transmission box 45, the transmission box 45 is connected with a first rolling box 46 and a second rolling box 47, the first rolling box 46 comprises a pair of first rollers 461, the second rolling box 47 comprises a pair of second rollers 471, the rolling pass formed by the pair of first rollers 461 is oval, the rolling pass formed by the pair of second rollers 471 is round, and the first rolling box 46 and the second rolling box 47 are arranged in sequence along the rolling direction; the five modular rolling mills sequentially arranged in the rolling direction are a first modular rolling mill 1, a second modular rolling mill 2, a third modular rolling mill 3, a fourth modular rolling mill 4 and a fifth modular rolling mill 5, respectively.
The gear box 45, the first roll box 46 and the second roll box 47 of each of the modular rolling mills are basically the same in construction, the pair of first rolls 461 of the first modular rolling mill 1 corresponds to the tenth pass K10, the pair of second rolls 471 of the first modular rolling mill 1 corresponds to the ninth pass K9, the pair of first rolls 461 of the second modular rolling mill 2 corresponds to the eighth pass K8, the pair of second rolls 471 of the second modular rolling mill 2 corresponds to the seventh pass K7, the pair of first rolls 461 of the third modular rolling mill 3 corresponds to the sixth pass K6, the pair of second rolls 471 of the third modular rolling mill 3 corresponds to the fifth pass K5, the pair of first rolls 461 of the fourth modular rolling mill 4 corresponds to the fourth pass K4, the pair of second rolls 471 of the fourth modular rolling mill 4 corresponds to the third pass K3, the pair of first rolls 461 of the fifth modular rolling mill 5 corresponds to the second pass K2, a pair of second rolls 471 of the fifth modular rolling mill 5 corresponds to the first pass K1, as shown in fig. 5.
The problem that the rolling speed range is too large due to the fact that all rolled pieces are finished from the first pass K1 is solved. The gearbox 43 of the third modular rolling mill 3, the gearbox 43 of the fourth modular rolling mill 4 and the gearbox 43 of the fifth modular rolling mill 5 are all changed to variable speed gearboxes. The gearboxes 43 of the first modular rolling mill 1 and the gearboxes 43 of the second modular rolling mill 2 can still be constant speed gearboxes, as shown in fig. 4 and 6.
The speed change gear box is provided with a high-speed gear and a low-speed gear, and the low-speed gear is adopted when the speed for producing large-specification rolled pieces is low; and when the speed for producing small-specification rolled pieces is high, a high-speed gear is adopted. The speed change gear box mainly comprises a high-speed gear pair 431, a low-speed gear pair 432 and a shifting clutch 433, and switching between a high-speed gear and a low-speed gear is performed through the shifting clutch driven by a hydraulic cylinder according to rolling specifications, as shown in fig. 6.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.
Claims (10)
1. A rolling line, characterized in that it comprises five modular rolling mills arranged in succession along the rolling direction, each of said modular rolling mills comprising a gearbox (45), the gearbox (45) being connected to a first roll box (46) and a second roll box (47), the first roll box (46) comprising a pair of first rolls (461), the second roll box (47) comprising a pair of second rolls (471), the first roll box (46) and the second roll box (47) being arranged in succession along the rolling direction;
the five modular rolling mills sequentially arranged along the rolling direction are respectively a first modular rolling mill (1), a second modular rolling mill (2), a third modular rolling mill (3), a fourth modular rolling mill (4) and a fifth modular rolling mill (5);
the rolling pass formed by a pair of first rollers (461) of a first modular rolling mill (1) is a first ellipse, and the area of the first ellipse is 168.44mm2、200.38mm2、234.82mm2、331.48mm2、349.85mm2Or 376.28mm2；
The pair of second rolls (471) of the first modular rolling mill (1) forms a rolling pass as a first circle having an area of 139.66mm2、166.80mm2、193.31mm2、273.77mm2、290.16mm2Or 312.56mm2；
The rolling pass formed by the pair of first rollers (461) of the second modular rolling mill (2) is a second ellipse, and the area of the second ellipse is 109.04mm2、131.69mm2、151.51mm2、176.24mm2、202.36mm2、229.83mm2、260.32mm2、286.84mm2、205.97mm2、228.91mm2、251.81mm2、277.08mm2、301.58mm2、207.55mm2、225.82mm2、242.97mm2、262.97mm2、287.45mm2Or 307.83mm2；
The pair of second rolls (471) of the second modular rolling mill (2) forms a rolling pass as a second circle having an area of 90.52mm2、110.43mm2、124.50mm2、147.34mm2、170.44mm2、189.28mm2、217.34mm2、237.11mm2、170.91mm2、188.54mm2、208.05mm2、232.19mm2、252.11mm2、172.37mm2、186.52mm2、201.91mm2、218.51mm2、240.16mm2Or 256.06mm2；
The rolling pass formed by the pair of first rollers (461) of the third modular rolling mill (3) is a third ellipse, and the area of the third ellipse is 73.00mm2、87.49mm2、99.11mm2、116.83mm2、135.66mm2、150.08mm2、171.64mm2、185.56mm2、136.05mm2、149.64mm2、164.22mm2、183.89mm2Or 200.34mm2；
The pair of second rolls (471) of the third modular rolling mill (3) forms a rolling pass as a third circle having an area of 58.77mm2、71.63mm2、82.66mm2、95.51mm2、111.44mm2、125.33mm2、141.73mm2、155.08mm2、112.00mm2、125.14mm2、137.43mm2、152.74mm2Or 165.45mm2；
The rolling pass formed by the pair of first rollers (461) of the fourth modular rolling mill (4) is a fourth ellipse, and the area of the fourth ellipse is 45.64mm2、54.41mm2、63.39mm2、73.61mm2、85.13mm2、96.11mm2、108.67mm2Or 123.13mm2；
The pair of second rolls (471) of the fourth modular rolling mill (4) forms a rolling pass as a fourth circle having an area of 37.20mm2、44.65mm2、52.13mm2、60.36mm2、69.70mm2、79.18mm2、89.28mm2Or 100.78mm2；
The rolling pass formed by the pair of first rollers (461) of the fifth modular rolling mill (5) is a fifth ellipse, and the area of the fifth ellipse is 29.18mm2、34.79mm2、40.60mm2、47.17mm2、54.51mm2、61.43mm2、69.57mm2、77.90mm2、86.68mm2、95.78mm2、105.29mm2、116.26mm2、126.20mm2、136.87mm2、148.83mm2、160.70mm2、173.93mm2、186.42mm2、199.40mm2、213.30mm2、226.97mm2、243.77mm2、258.46mm2、272.87mm2、226.69mm2、307.81mm2、323.95mm2、339.90mm2、359.54mm2Or 377.64mm2；
The pair of second rolls (471) of the fifth modular rolling mill (5) forms a rolling pass as a fifth circle having an area of 23.76mm2、28.27mm2、33.18mm2、38.48mm2、44.18mm2、50.27mm2、56.75mm2、63.62mm2、70.88mm2、78.54mm2、86.59mm2、95.03mm2、103.87mm2、113.10mm2、122.72mm2、132.73mm2、143.14mm2、153.94mm2、165.13mm2、176.67mm2、188.69mm2、201.04mm2、213.82mm2、226.69mm2、240.25mm2、254.78mm2、268.78mm2、283.54mm2、298.57mm2Or 314.11mm2。
2. A rolling line according to claim 1, characterised in that the modular rolling mill also comprises a motor (41) and a gearbox (43), the motor (41), the gearbox (43) and the transmission box (45) being connected in series, the motor (41) being able to drive a pair of first rolls (461) and a pair of second rolls (471) for rolling.
3. A rolling line according to claim 2, characterised in that the transmission box (45) comprises a transmission input shaft (458), the transmission input shaft (458) being externally fitted with a gearwheel (451), the gearwheel (451) being connected to the pair of first rolls (461) by means of a first transmission mechanism, the gearwheel (451) being connected to the pair of second rolls (471) by means of a second transmission mechanism.
4. Rolling line according to claim 3, characterised in that said first transmission comprises, connected in series, a first pinion (452), a first horizontal shaft (459), a first bevel gear pair (454), a first tilting spindle (4510) and a first main cylindrical gear pair (456), said first pinion (452) meshing with said gearwheel (451).
5. A rolling line according to claim 4, characterised in that the driving pinion of the first main cylindrical gear pair (456) is housed outside the first inclined main shaft (4510) and the driven pinion of the first main cylindrical gear pair (456) is housed outside one of the first rollers (461) of the pair of first rollers (461).
6. Rolling line according to claim 5, characterised in that the first transmission also comprises a first slave cylindrical gear pair (4511) and a first oblique secondary shaft (4512), the driving gear of the first master cylindrical gear pair (456) meshing with the driving gear of the first slave cylindrical gear pair (4511), the slave gear of the first slave cylindrical gear pair (4511) being housed outside the other first roll (461) of the pair of first rolls (461).
7. Rolling line according to claim 4, characterised in that the first pinion (452) is a helical gear and the first main cylindrical gear pair (456) is a helical gear pair, said first transmission being of the same configuration as the second transmission.
8. A rolling line according to claim 2, characterized in that the output shaft of the motor (41) is connected to the input shaft of the gearbox (43) by means of a first coupling (42), the output shaft of the gearbox (43) is connected to the transmission input shaft (458) of the transmission box (45) by means of a second coupling (44), the rolling line further comprising a water box (6), the fifth modular rolling mill (5) being located between the fourth modular rolling mill (4) and the water box (6).
9. A rolling line according to claim 2, characterized in that the gearboxes (43) of the third modular rolling mill (3), the fourth modular rolling mill (4) and the fifth modular rolling mill (5) are all variable-speed gearboxes.
10. Rolling line according to claim 9, characterised in that said change speed gearbox has two gears, respectively a high gear and a low gear.
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|---|---|---|---|
| CN201911248412.6A CN113020252A (en) | 2019-12-09 | 2019-12-09 | Rolling production line |
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| CN201911248412.6A CN113020252A (en) | 2019-12-09 | 2019-12-09 | Rolling production line |
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Application publication date: 20210625 |